公开(公告)号：US20240384423A1

公开(公告)日：2024-11-21

申请号：US18690268

申请日：2022-09-05

Applicant: QINGKE NEW ENERGY TECHNOLOGY (SHANGHAI) CO., LTD.

Inventor： Xuewei MAO ,  Weibing LIN ,  Biao TENG

IPC: C25B11/032 ,  B21B1/22 ,  C25B11/063

Abstract: Disclosed are a gas diffusion layer and a preparation method therefor, which comprises the following steps: S1: providing elongated recesses in parallel on a side surface of a metal sheet; S2: cutting the metal sheet provided with the elongated recesses into a desired shape; S3: stacking a plurality of cut metal sheets such that adjacent metal sheets are tightly attached and firmly connected to form a metal block having regular pore structures; and S4: cutting the metal block along a cross section of the metal block, where the cutting thickness matches the thickness of the desired gas diffusion layer, and a cut sheet structure with micropores being regularly distributed on the surface is used as the gas diffusion layer. The present invention can solve the problems that titanium fiber felts in the prior art have poor diversion performance, low contact efficiency and large contact surface resistance.